7.7.90 Fully Qualified Domain Name (FQDN)
29.0603GPPGeneral Packet Radio Service (GPRS)GPRS Tunnelling Protocol (GTP) across the Gn and Gp interfaceRelease 17TS
Fully Qualified Domain Name (FQDN) is coded as depicted in Figure 7.7.90.1.
|
Bits |
||||||||||
|
Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
||
|
1 |
Type = 190 (decimal) |
|||||||||
|
2 to 3 |
Length = n |
|||||||||
|
4 to (n+3) |
FQDN |
|||||||||
Figure 7.7.90.1: Fully Qualified Domain Name (FQDN)
The FQDN field encoding shall be identical to the encoding of a FQDN within a DNS message of clause 3.1 of IETF RFC 1035 [45] but excluding the trailing zero byte.
NOTE 1: The FQDN field in the IE is not encoded as a dotted string as commonly used in DNS master zone files.
A "Co-located GGSN-PGW FQDN" IE is a combined GGSN-PGW host name as per clause 4.3.2 of 3GPP TS 29.303 [46] when the Co-located GGSN-PGW FQDN IE is populated from 3GPP TS 29.303 [46] procedures. Specifically, the first DNS label is either "topon" or "topoff", and the canonical node name of the Co-located GGSN-PGW starts at the third label.